Monday, January 23, 2012
Friday, January 20, 2012
Monday, January 9, 2012
The 7 items
Just to tell you, my group did not find all 7 items.......
In this project, we were learning about homogeneous and heterogeneous materials. Homogeneous items are things that can't be physically seperated. Heterogeneous items are things that can be physically seperated. To learn this, we were given an unknown liquid with items inside it and were told to name all 6 of them. The materials we received included a graduated cylinder, beakers, funnel paper, a cone, a magnet, and a stove like item. Later, my teacher told us she was mistaken and there were 7 items.
First, we poured out the water into a large beaker, seperating the other items from it by putting them on the funnel paper. From the start we could tell a few items. We could see toothpicks, pebbles, a rock, beans and a seaweed like substance. However, as soon as you use the magnet on it you should see that it is metal filings. I found some salt on the paper while examining the paper, keep that in mind as that was a waste of time.
Later, we put the large beaker on the stove, and waited. After some time, we realized that the dissintegrated material was......salt? Apparently, that lone piece of salt was a misdeamer, as it just came out of the water. In the end we only came up with 5 items out of the 7. Even though we didn't succeed, we learned that the salt water was homogeneous and the rocks and other items were heterogeneous. So in the end even though we didn't succeed, we learned something. Peace.
In this project, we were learning about homogeneous and heterogeneous materials. Homogeneous items are things that can't be physically seperated. Heterogeneous items are things that can be physically seperated. To learn this, we were given an unknown liquid with items inside it and were told to name all 6 of them. The materials we received included a graduated cylinder, beakers, funnel paper, a cone, a magnet, and a stove like item. Later, my teacher told us she was mistaken and there were 7 items.
First, we poured out the water into a large beaker, seperating the other items from it by putting them on the funnel paper. From the start we could tell a few items. We could see toothpicks, pebbles, a rock, beans and a seaweed like substance. However, as soon as you use the magnet on it you should see that it is metal filings. I found some salt on the paper while examining the paper, keep that in mind as that was a waste of time.
Later, we put the large beaker on the stove, and waited. After some time, we realized that the dissintegrated material was......salt? Apparently, that lone piece of salt was a misdeamer, as it just came out of the water. In the end we only came up with 5 items out of the 7. Even though we didn't succeed, we learned that the salt water was homogeneous and the rocks and other items were heterogeneous. So in the end even though we didn't succeed, we learned something. Peace.
Monday, December 19, 2011
Frog Dissection
In Class we dissected a frog. As we dissected, a foul odor,(however not as bad as the worms)came out of the frog. We had to cut apart muscle and I was forced to break the frogs arms so we could pin it down. After that, the inside was very interesting.
Our frog was a female, as we could tell from the eggs. the eggs were greyish blackish and were slimy. We had to remove the eggs to see the other essential organs. At first glimpse, you would see the 3 lobe liver. Then you would see the stomach. While we were dissecting, our group found some spaghetti like strands in the frog. Those are fat bodies, which are basically just fat. We had to remove that to.
The frogs stomach was a organ that our group cut open. Mrs. Rousseau told us that sometimes the stomach would contain pieces of undigested food, such as flies. Unfortunately, our frog was dead hungry.
I wonder why there were so many eggs in the body. I also wonder how many of them die before birth. I also want to know what is the significence of the 3 lobe liver. What is the difference between the human and frog body, based on internal features. Why is the frogs skin green/brown. There are so many questions, and a lot of them may be answered.
Our frog was a female, as we could tell from the eggs. the eggs were greyish blackish and were slimy. We had to remove the eggs to see the other essential organs. At first glimpse, you would see the 3 lobe liver. Then you would see the stomach. While we were dissecting, our group found some spaghetti like strands in the frog. Those are fat bodies, which are basically just fat. We had to remove that to.
The frogs stomach was a organ that our group cut open. Mrs. Rousseau told us that sometimes the stomach would contain pieces of undigested food, such as flies. Unfortunately, our frog was dead hungry.
I wonder why there were so many eggs in the body. I also wonder how many of them die before birth. I also want to know what is the significence of the 3 lobe liver. What is the difference between the human and frog body, based on internal features. Why is the frogs skin green/brown. There are so many questions, and a lot of them may be answered.
Friday, December 2, 2011
Monday, November 7, 2011
Hydrochloric acid
Today, we experimented with hydrochloric acid. It is something in your stomach that is very dangerous and can burn you. We put egg raw in it. the egg raw hasn't changed yet, but tomorrow it might. I was forced to take off the caps. I was scared that the hydrochloric acid would go on my skin.
Tuesday, November 1, 2011
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